I added Click Comments to this blog. Why? I don't know. I am surprised when someone tells me "I was reading your blog" or when I get an email to that effect. I have several friends who I know read the blog. I have also found I enjoy the feedback but often, there are people who have had some sort of technical problem leaving a comment.
I have often found that, although I like the feedback and I know others like feedback on what they write, it is sometimes quite brief so this allows you to quickly add a comment, just by clicking, no text necessary!